
外径D和壁厚T的选择允许偏差
外径D和壁厚T的选择允许偏差
| 加工方法 | 外径允许偏差 | 壁厚T的允许偏差 | |||||
| 允许偏差等级 | 允许偏差 | 允许偏差等级 | 允许偏差 | ||||
| 热加工 | D2 | ±1%或±0.5mm 取其大者 | T2 | ±12.5%或±0.4mm 取其大者 | |||
| 冷加工a | D3 | ±0.75%或±0.3mm 取其大者 | T3 | ±7.5%或±0.15mm 取其大者 | |||
| a.只有在规定冷加工条件下才适用 | |||||||
| 船用管GB/T5312-1999 - 无缝管产品标准 | |||||||
| 尺寸公差 | |||||||
| 外径(D) | ≤159 | >159 | |||||
| 外径允许偏差 | ±1.0%(最小为±0.5mm) | ±1.25% | |||||
| 壁厚(S) | ≤20 | S>20 | D≥351 | ||||
| 壁厚允许偏差 | +15%,-10%(最小为+0.45mm,-0.30mm) | ±10% | ±15% | ||||
允许值见表1。(D0为外径,S为壁厚)
美标公称钢管尺寸
Stainless Steel Pipe Series(ANSI B 36.10: 36.19)
, NPS
| 标号 | OD(mm) 公称外径 | 5S | 5 | 10S | 10 | 20 | 30 | STD | 40S | 40 | 60 | XS | 80S | 80 | 100 | 120 | 140 | 160 | XXS | |
| 1/8 | 10.3 | WT | 1.24 | 1.24 | 1.45 | 1.73 | 1.73 | 1.73 | 2.41 | 2.41 | 2.41 | |||||||||
| Kg/m | 0.28 | 0.28 | 0.32 | 0.37 | 0.37 | 0.37 | 0.47 | 0.47 | 0.47 | |||||||||||
| 1/4 | 13.7 | WT | 1.65 | 1.65 | 1.85 | 2.24 | 2.24 | 2.24 | 3.02 | 3.02 | 3.02 | |||||||||
| Kg/m | 0.49 | 0.49 | 0.54 | 0.63 | 0.63 | 0.63 | 0.8 | 0.8 | 0.8 | |||||||||||
| 3/8 | 17.1 | WT | 1.65 | 1.65 | 1.85 | 2.31 | 2.31 | 2.31 | 3.2 | 3.2 | 3.2 | |||||||||
| Kg/m | 0.63 | 0.63 | 0.7 | 0.84 | 0.84 | 0.84 | 1.1 | 1.1 | 1.1 | |||||||||||
| 1/2 | 21.3 | WT | 1.65 | 1.65 | 2.11 | 2.11 | 2.41 | 2.77 | 2.77 | 2.77 | 3.73 | 3.73 | 3.73 | 4.78 | 7.47 | |||||
| Kg/m | 0.8 | 0.8 | 1 | 1 | 1.12 | 1.27 | 1.27 | 1.27 | 1.62 | 1.62 | 1.62 | 1.95 | 2.55 | |||||||
| 3/4 | 26.7 | WT | 1.65 | 1.65 | 2.11 | 2.11 | 2.41 | 2.87 | 2.87 | 2.87 | 3.91 | 3.91 | 3.91 | 5.56 | 7.82 | |||||
| Kg/m | 1.02 | 1.02 | 1.28 | 1.28 | 1.44 | 1.69 | 1.69 | 1.69 | 2.2 | 2.2 | 2.2 | 2.9 | 3. | |||||||
| 1 | 33.4 | WT | 1.65 | 1.65 | 2.77 | 2.77 | 2.9 | 3.38 | 3.38 | 3.38 | 4.55 | 4.55 | 4.55 | 6.35 | 9.09 | |||||
| Kg/m | 1.29 | 1.29 | 2.09 | 2.09 | 2.18 | 2.5 | 2.5 | 2.5 | 3.24 | 3.24 | 3.24 | 4.24 | 5.45 | |||||||
| 11/4 | 42.2 | WT | 1.65 | 1.65 | 2.77 | 2.77 | 2.97 | 3.56 | 3.56 | 3.56 | 4.85 | 4.85 | 4.85 | 6.35 | 9.7 | |||||
| Kg/m | 1.65 | 1.65 | 2.69 | 2.69 | 2.87 | 3.39 | 3.39 | 3.39 | 4.47 | 4.47 | 4.47 | 5.61 | 7.77 | |||||||
| 11/2 | 48.3 | WT | 1.65 | 1.65 | 2.77 | 2.77 | 3.18 | 3.68 | 3.68 | 3.68 | 5.08 | 5.08 | 5.08 | 7.14 | 10.2 | |||||
| Kg/m | 1.9 | 1.9 | 3.11 | 3.11 | 3.54 | 4.05 | 4.05 | 4.05 | 5.41 | 5.41 | 5.41 | 7.25 | 9.55 | |||||||
| 2 | 60.3 | WT | 1.65 | 1.65 | 2.77 | 2.77 | 3.18 | 3.91 | 3.91 | 3.91 | 5.54 | 5.54 | 5.54 | 8.74 | 11.1 | |||||
| Kg/m | 2.39 | 2.39 | 3.93 | 3.93 | 4.48 | 5.44 | 5.44 | 5.44 | 7.48 | 7.48 | 7.48 | 11.1 | 13.4 | |||||||
| 21/2 | 73 | WT | 2.11 | 2.11 | 3.05 | 3.05 | 4.78 | 5.16 | 5.16 | 5.16 | 7.01 | 7.01 | 7.01 | 9.53 | 14 | |||||
| Kg/m | 3.69 | 3.69 | 5.26 | 5.26 | 8.04 | 8.63 | 8.63 | 8.63 | 11.4 | 11.4 | 11.4 | 14.9 | 20.4 | |||||||
| 3 | 88.9 | WT | 2.11 | 2.11 | 3.05 | 3.05 | 4.78 | 5.49 | 5.49 | 5.49 | 7.62 | 7.62 | 7.62 | 11.1 | 15.2 | |||||
| Kg/m | 4.52 | 4.52 | 6.46 | 6.46 | 9.92 | 11.3 | 11.3 | 11.3 | 15.3 | 15.3 | 15.3 | 21.4 | 27.7 | |||||||
| 31/2 | 102 | WT | 2.11 | 2.11 | 3.05 | 3.05 | 4.78 | 5.74 | 5.74 | 5.74 | 8.08 | 8.08 | 8.08 | |||||||
| Kg/m | 5.18 | 5.18 | 7.41 | 7.41 | 114 | 13.6 | 13.6 | 13.6 | 18.6 | 18.6 | 18.6 | |||||||||
| 4 | 114 | WT | 2.11 | 2.11 | 3.05 | 3.05 | 4.78 | 6.02 | 6.02 | 6.02 | 8.56 | 8.56 | 8.56 | 11.1 | 13.5 | 17.1 | ||||
| Kg/m | 5.84 | 5.84 | 8.37 | 8.37 | 12.9 | 16.1 | 16.1 | 16.1 | 22.3 | 22.3 | 22.3 | 28.3 | 33.5 | 41 | ||||||
| 5 | 141 | WT | 2.77 | 2.77 | 3.4 | 3.4 | 6.55 | 6.55 | 6.55 | 9.53 | 9.53 | 9.53 | 12.7 | 15.9 | 19.1 | |||||
| Kg/m | 9.46 | 9.46 | 11.6 | 11.6 | 21.8 | 21.8 | 21.8 | 31 | 31 | 31 | 40.3 | 49.1 | 57.4 | |||||||
| 6 | 168 | WT | 2.77 | 2.77 | 3.4 | 3.4 | 7.11 | 7.11 | 7.11 | 11 | 11 | 11 | 14.3 | 18.3 | 22 | |||||
| Kg/m | 11.3 | 11.3 | 13.8 | 13.8 | 28.3 | 28.3 | 28.3 | 42.6 | 42.6 | 42.6 | 54.2 | 67.6 | 79.2 | |||||||
| 8 | 219 | WT | 2.77 | 2.77 | 3.76 | 3.76 | 6.35 | 7.04 | 8.18 | 8.18 | 8.18 | 10.3 | 12.7 | 12.7 | 12.7 | 15.1 | 18.3 | 20.6 | 23 | 22.2 |
| Kg/m | 14.8 | 14.8 | 20 | 20 | 33.3 | 36.8 | 42.6 | 42.6 | 42.6 | 53.1 | .6 | .6 | .6 | 75.9 | 90.4 | 101 | 111 | 108 | ||
| 10 | 273 | WT | 3.4 | 3.4 | 4.19 | 4.19 | 6.35 | 7.8 | 9.27 | 9.27 | 9.27 | 12.7 | 12.7 | 12.7 | 15.1 | 18.3 | 21.4 | 25.4 | 28.6 | 25.4 |
| Kg/m | 22.6 | 22.6 | 27.8 | 27.8 | 41.8 | 51 | 60.3 | 60.3 | 60.3 | 81.5 | 81.5 | 81.5 | 96 | 115 | 133 | 155 | 172 | 155 | ||
| 12 | 324 | WT | 3.96 | 3.96 | 4.57 | 4.57 | 6.35 | 8.38 | 9.53 | 9.53 | 10.3 | 14.3 | 12.7 | 12.7 | 17.5 | 21.4 | 25.4 | 28.6 | 33.3 | 25.4 |
| Kg/m | 31.2 | 31.2 | 36 | 36 | 49.7 | 65.2 | 73.9 | 73.9 | 79.7 | 109 | 97.5 | 97.5 | 132 | 160 | 187 | 208 | 239 | 187 | ||
| 14 | 356 | WT | 3.96 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 9.53 | 11.1 | 15.1 | 12.7 | 19.1 | 23.8 | 27.8 | 31.8 | 35.7 | |||
| Kg/m | 34.3 | 34.3 | 41.4 | 54.7 | 67.9 | 81.3 | 81.3 | 94.6 | 127 | 107 | 158 | 195 | 225 | 254 | 282 | |||||
| 16 | 406 | WT | 4.19 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 9.53 | 12.7 | 16.7 | 12.7 | 21.4 | 26.2 | 31 | 36.5 | 40.5 | |||
| Kg/m | 41.6 | 41.6 | 47.3 | 62.6 | 77.8 | 93.3 | 93.3 | 123 | 160 | 123 | 204 | 246 | 287 | 333 | 365 | |||||
| 18 | 457 | WT | 4.19 | 4.19 | 4.78 | 6.35 | 7.92 | 11.1 | 9.53 | 14.3 | 19.1 | 12.7 | 23.8 | 29.4 | 34.9 | 39.7 | 45.2 | |||
| Kg/m | 46.8 | 46.8 | 53.3 | 70.6 | 87.7 | 122 | 105 | 156 | 206 | 139 | 255 | 310 | 3 | 408 | 459 | |||||
| 20 | 508 | WT | 4.78 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 9.53 | 15.1 | 20.6 | 12.7 | 26.2 | 32.5 | 38.1 | 44.5 | 50 | |||
| Kg/m | 59.3 | 59.3 | 68.6 | 78.6 | 117 | 155 | 117 | 193 | 248 | 155 | 311 | 382 | 441 | 508 | 565 | |||||
| 22 | 559 | WT | 4.78 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 9.53 | 22.2 | 12.7 | 28.6 | 34.9 | 41.3 | 47.6 | 54 | ||||
| Kg/m | 65.3 | 65.3 | 75.6 | 86.5 | 129 | 171 | 129 | 294 | 171 | 374 | 451 | 527 | 601 | 672 | ||||||
| 24 | 610 | WT | 5.54 | 5.54 | 6.35 | 6.35 | 9.53 | 14.3 | 9.53 | 17.5 | 24.6 | 12.7 | 31 | 38.9 | 46 | 52.4 | 59.5 | |||
| Kg/m | 82.6 | 82.6 | 94.5 | 94.5 | 141 | 210 | 141 | 255 | 355 | 187 | 442 | 548 | 0 | 720 | 808 | |||||
| 26 | 660 | WT | 7.92 | 12.7 | 9.53 | 12.7 | ||||||||||||||
| Kg/m | 127 | 203 | 153 | 203 | ||||||||||||||||
| 28 | 711 | WT | 7.92 | 12.7 | 15.9 | 9.53 | 12.7 | |||||||||||||
| Kg/m | 137 | 219 | 272 | 165 | 219 | |||||||||||||||
| 30 | 762 | WT | 6.35 | 6.35 | 7.92 | 7.92 | 12.7 | 15.9 | 9.53 | 12.7 | ||||||||||
| Kg/m | 118 | 118 | 147 | 147 | 235 | 292 | 177 | 235 | ||||||||||||
| 32 | 813 | WT | 7.92 | 12.7 | 15.9 | 9.53 | 17.5 | 12.7 | ||||||||||||
| Kg/m | 157 | 251 | 312 | 1 | 343 | 251 | ||||||||||||||
| 34 | 8 | WT | 7.92 | 12.7 | 15.9 | 9.53 | 17.5 | 12.7 | ||||||||||||
| Kg/m | 167 | 267 | 332 | 201 | 365 | 267 | ||||||||||||||
| 36 | 914 | WT | 7.92 | 12.7 | 15.9 | 9.53 | 19.1 | 12.7 | ||||||||||||
| Kg/m | 177 | 282 | 352 | 213 | 420 | 282 |
| 各国塑胶管外径与国际钢管衬塑管外径对照表 | ||||||||||
| 公 称 直 径 (m/m) | 英 寸 | 各国给水及化工用UPVC塑胶管的尺寸 | HG20553-93国际 20#钢管 | HG20520-92国际 HRP/PVC管#钢管 | ||||||
| (CNS) 管外径*壁厚 | 日本(JIS) 管外径*壁厚 | 国际(DIN) 管外径*壁厚 | 美国ANSI、 英国BS、SCH40 管外径*壁厚 | A系列 SCH40 管外径*壁厚 | B系列 SCH80 管外径*壁厚 | 整体 管 外径 | PVC 管 外径 | PVC 管 壁厚 | ||
| 10 | 3/8 ″ | 18×2.2 | 18×2.5 | 16×- | 17.4×- | 17.2×2.3 | 17.0×3.2 | |||
| 15 | 1/2 ″ | 22×2.7 | 22×3.0 | 20×3.0 | 21.33×3.98 | 21.3×2.9 | 22×3.6 | |||
| 20 | 3/4 ″ | 26×2.7 | 26×3.0 | 25×3.0 | 263.67×4.16 | 26.9×2.9 | 27×4.0 | |||
| 25 | 1 ″ | 34×3.2 | 32×3.5 | 32×3.6 | 33.40×4.82 | 33.7×3.2 | 34×4.5 | 37×32×3.6 | ||
| 32 | 1+1/4 ″ | 42×3.2 | 38×3.5 | 40×3.6 | 42.16×5.15 | 42.4×3.6 | 42×5.0 | 45×40×3.6 | ||
| 40 | 1+1/2 ″ | 48×3.6 | 48×4.0 | 50×4.0 | 48.26×5.38 | 48.3×3.6 | 48×5.0 | 55×50×3.6 | ||
| 50 | 2 ″ | 60×4.3 | 60×4.5 | 63×4.7 | 60.32×5.86 | 60.3×4.0 | 60×5.6 | 68×63×3.6 | ||
| 65 | 2+1/2 ″ | 76×4.1 | 76×4.5 | 75×5.5 | 73.02×7.44 | 76.1×5.0 | 76.1×7.1 | 80×75×3.6 | ||
| 80 | 3 ″ | ×5.1 | ×5.9 | 90×6.6 | 88.90×8.07 | 88.9×5.6 | ×8.0 | 95×90×4.0 | ||
| 100 | 4 ″ | 114×6.6 | 114×7.1 | 110×8.1 | 114.30×9.06 | 114.3×5.9 | 114×8.8 | 115×110×4.0 | ||
| 125 | 5 ″ | 140×7.5 | 140×7.5 | 140×6.7 | 141.3×- | 139.7×6.3 | 140×10.0 | 130×126×4.0 | ||
| 150 | 6 ″ | 165×8.5 | 165×9.6 | 160×7.7 | 168.27×11.63 | 168.3×7.1 | 168×11.0 | 165×160×4.0 | ||
| 200 | 8 ″ | 216×10.5 | 216×11.0 | 225×9.6 | 219.07×13.46 | 219.1×8.0 | 219×12.5 | 205×200×4.0 | ||
| 250 | 10 ″ | 267×13.0 | 267×13.6 | 250×11.9 | 273.0×8.8 | 273×16.0 | 255×250×4.0 | |||
| 300 | 12 ″ | 318×15.5 | 318×16.2 | 315×15.0 | 323.9×10.0 | (-)×17.5 | 305.5×300×4.0 | |||
| 350 | 14 ″ | 370×18.0 | 355×16.9 | 355.6×11.0 | (-)×20.0 | 360×355×5.0 | ||||
| 400 | 16 ″ | 420×20.5 | 400×19.1 | 406.4×12.5 | (-)×22.2 | 405.5×400×5.0 | ||||
| 450 | 18 ″ | 470×22.9 | 450×21.5 | 457.0×14.2 | (-)×25.0 | |||||
| 500 | 20 ″ | 520×25.3 | 500×23.9 | 508.0×16.0 | (-)×28.0 | 506×500×6.0 | ||||
| 600 | 24 ″ | 630×30.7 | 630×30.0 | 609.6×17.5 | (-)×32.0 | 507×600×6.0 | ||||
